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  • Subject: Re: RPG to XML - XML - RPG +/-
  • From: "paul cunnane" <paul@xxxxxxxxxxx>
  • Date: Mon, 14 Aug 2000 10:02:47 +0100

> To create a XML document, I'd just open a stream file in the IFS and write
> the <BLAH> </BLAH> stuff in, in between the actual field data read from
> the AS/400 file.

Yup, that's quite easy.  In fact, it might be worthwhile to write a service
program (has anyone noticed that I'm a service program junkie??) with a
routine to wrap data in tags:

  eval   xmlData = makeTag('data' : 'BLAH')

would return

  <BLAH>data</BLAH>

This would be easy to properly nest, etc.  Of course, if you need tag
attributes, it gets a wee bit more complicated.  You could have a routine
like:

  eval   xmlData = addAttr(xmlData : 'type' : 'natter')

giving

  <BLAH type="natter">data</BLAH>

and so on.

> To parse, you'd probably want to use some kind of finite state machine.
> Probably make a library of utilities for doing this, then throw them into
> a service program.
>
> Of course, if you wanted your program to be able to handle this for an
> arbitrary file, and parse an arbitrary XML format, it'd be a lot more work
> But, again, possible...

I think I'd bite the bullet and rope in Java for that task -- why re-invent
the wheel?  There are excellent Java classes to handle arbitrary XML
documents and DTDs.

--
Paul


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